Road machine



Jan. 13, 1925. 1,522,522

J. B. JARMIN ROAD MACHINE Filed June 11, 1923 2 Sheets-Sheet 1 J. B. JARMIN ROAD MACHINE Filed June 11, 1923 2 Sheets-Sheet 2 Patented Jan. 13, 1925.

UNITED STATES JAMES B. JARLIIN, OF SPOKANE, WASHINGTON.

ROAD MACHINE.

Application filed June 11, 1923. Serial No. 644,625.

To all 707L092? it may concern.-

Be it known that I. Janus B. J ARMIN, a citizen of the United States, residing at Spokane, in Spokane County, and State of \Vashington, have invented certain new and useful Improvements in Road Machines, of which the following is a specification.

My presentinvent-ion relates to improvements in road machines of the wheel scraper type, of the general structure shown in my Patent No. 1,296,807, wherein a comparatively long coupled implement is utilized for supporting and suspending a pair of scraper blades. Means are provided whereby the main frame of the implement is adjustable, vertically not only to adapt the scraper blades for various pressures on the road surface, and to elevate the blades from operative position, but the main frame, and parts supported thereby, is tiltable laterally in order to bring one or the other end of the blade into closer contact with the road surface. In the present instance the scraper blades are also angularly adjustable, within limits, with relation to the longitudinal center of the implement, and provision is made for strengthening and bracing these angularly adjustable parts. By the utilization of novel combinations and arrangements of parts the scraper blades may with facility be adjusted and be braced in their adjusted positions, and by the weight of the implement the blades are at all times maintained in operative position.

The accompanying drawings illustrate an exemplification of the present invention of which thelnovel combinations and arrange ments will be more fully pointed out and claimed hereinafter.

Figure 1 is a plan view of an implement embodying my invention, showing in dotted lines the angular adjustment of the scraper blades.

Figure 2 is a view in side elevation of the implement.

Figure 3 is a transverse, vertical sectional view at line 3-3 of Figure 2, looking toward the front of the implement.

Figure 4 is a plan view at the center of the implement showing one side of the blade supporting frame and the end portions of the scraper blades with connections.

Figure 5 is an end view of that portion of the implement shown in Figure l.

Figure 6 is an enlarged, detail view looking at the rear face of a front scraper bar and showing its supporting members and connections.

Figure 7 is a detail view showing the supporting bracket between a scraper and its supporting beam.

As set forth in the above mentioned patent the main frame 1 is of rectangular shape and made up of angle irons, and cross beams as 2, the latter preferably composed of channel plates, and bolted together to form a rigid, well braced structure, with the front ends of the sides of the frame converging as at 3 at the front of the implement. At the pointed front end of the main frame a swivel head 1 is rigidly fixed for the king pin 5 which forms part of the steering truck 6, and the draft tongue 7 is also suitably coupled to the steering truck, as at 8. I

By means of the vertical screw bar 9 and crank handle or lever 10, in connection with the fixed head 11 on the king pin, the front portion of the main frame may be elevated or depressed for vertical adjustment of the implement.

The rear portion of the implement is vertically adjustable, and the main frame may be tilted laterally while supported on the rear wheels 12, 12, each of which has a crank axle 13 journaled in the rear bolster or beam 2. Each crank axle has a crank arm 14 and an operating lever 15, these parts being con nected by a link as 16. Springs 17 having one end anchored to the frame and the other end connected to a link 18, which link is pivoted to the crank arm 14:, assist in elevating the main frame, and in cushioning the movement of the main frame while it is being depressed. Thus it will be understood that the driver sitting in the seat 19 has ready access to either of the operating levers 15, and by manipulating both levers simultaneously the main frame, while in horizontal position, may be either elevated or depressed and thus vertically adjusted with relation to the ground. Ur by manipulating one lever one side of the frame may be tilted upwardly or downwardly, as selected, thus adapting the machine to various positions for scraping operations as will be described.

Below the main frame is suspended a fixed scraper frame comprising two pairs of spaced, upper and lower angle irons 20, 20 and 21, 21, that are disposed longitudinally of the machine, below the side bars of the Ill) main frame 1-. One pair of these spaced bars, at each side of the implement, is supported from the main frame by comparatively l'ongbolts 22, and sleeves for spacers, and secured by nuts as 23. The bolts pass through flanges in the main frame bars and through the successive, horizontal flanges, of the pairs of spaced bars 21, the spacing sleeves hold these elements or members in rigid position, and the nuts secure the parts against movement on the bolts. This rigid scraper frame is also braced agamst lateral strains by means of four diagonal brace bars 24L bolted or riveted at their respective ends to transverse members of the main frame and to the upper angle bars 20 of the scraper frame. The braces extend transversely of the implement, and hold the under frame against lateral sway or swinging movement.

Two scraper blades 25, and 26 are utilized, and as shown they are preferably c-oncavoconvex plates extending transversely of the implement equidistant from the longitudinal center thereof and projecting a distance beyond the rear wheels 12. The plates forming the scrapers are reinforced by angle irons 27 bolted at the rear thereof and extending substantially throughout the length of the blades.

The scrapersor blades are suspended within the rigid scraper frame by means of a pair of normally arranged transverse bars 28 and 29, spaced apart, and at their respective ends equipped with bearing plates 30. The transverse suspending bars and their four end plates are preferably of angle iron, and the attached plates at the ends of the bars are reversed in position with relation to the bars. The suspending bars are interposed between the spaced members 20 and 21 at each side of the scraper frame and the horizontal flanges of the bars and plates provide bearing faces for the suspending bars in contact with these members of the scraper frame, which latter forms a guide for the bars, and their flanged end plates.

Bearing braces 31 which are angularly disposed are riveted at the ends of each of the bearing plates and extend outward and laterally of the implement and are connected at the under side of a longitudinally disposed channel beam 32 on the pivot bolt 33. There are two channel beams 32, one under each side bar of the main frame, and the four pivot bolts 33 pass through both flanges of these channel beams, which form supports for the scraper blades, and through the horizontal flanges of the four bearing plates 30 of the transverse bars 28 and 29. These bolts also pass through the lower outer ends of the angle braces 31 which fit under the lower flanges of the scraper supporting beams. The four pivot bolts 33 thus form pivotal points with wide bearing surfaces two centrally alined points.

and the an'gularly disposed braces 31 strengthen the rigidity of the pivotal oints. Thus it will be seen that the two transverse, parallel bars 28 and 29 and the two longitudinal scraper supporting beams 32 form a flexible frame with four pivot bolts 33 dis posed as shown and the transverse bars are capable of sliding motion in a horizontal plane between the upper and lower members 20 and 21 of the fixed scraper frame. The longitudinally disposed scraper supporting beams 32 are capable of longitudinal movement with relation to the implement as thefits over the perforated horizontal flange of the angle iron braces 27 of the scraper blades, and a pivot bolt 36 secures the bracket hanger and angle iron together. To hold the scraper blades in upright position and prevent them turning or rolling over under frictional contact with the road surface, I employ a pair of notched hooks 37 for each blade. These hooks are pivoted to the hangers at 38 and the notches forming part of the hooks have a sufliciently loose fit over the top edge of the scraper to permit angu lar movement of the scraper blade with relation to its hanger or bracket.

At the longitudinal center of the implement is located a. horizontally disposed link 39, above the two transverse bars 28 and 29, and each of these bars has a central swivel plate 40 riveted or bolted thereto, to ac-- commodate a swivel bolt as 41. The bolts 41 pass through the respective bars 28 and 29 and through their rigidly attached swivel plates, and while the link is fixed and remains in fixed relation to the main frame of the implement, it will be apparent that the flexible frame, of which the bars 28 and 29 form a part, may swivel or turn on these lVith these two additional bolts 41, and the pivot bolts 33, there are six pivotal points to permit movement of the flexible frame which sup ports the scrappers. The link is supported from the main frame of the implementand at its respective ends has a transversly disposed clevis 42 attached by a rivet 42. At the ends of the link a pair of transversely disposed angular brace rods 43 are hooked at opposite ends of their clevises, and these rods which extend upwardly and outwardly from the link are secured to anchoring plates stat, preferably being secured on four of the posts 22 of the fixed scraper frame,

The pull of the draft power applied to the implement is transmitted directly to the flexible scraper supporting frame, and a coupling plate is provided on the head 4 for the coupling or draft bar 46. The draft bar has an eye 46" through which the draft chain 47 is passed and is free to slide, and the ends of this chain are connected to a pair of complementary draft rods a8. These rods may be connected directly to the respective longitudinal beams 32 or to attaching plates on the ends of the beams, but in either event they are loosely connected with the beams 32, thus transmitting the pull from the horses or tractor, through the draft appliances direct to the scraper supporting beams.

In Figures 1 and 2 the implement is illustrated with the scraper blades traveling or being dragged over the road surface in horizontal position, and the draft chain a? equalized. The main frame may be adjusted vertically, as described, carrying with it the fixed scraper frame, its flexible frame and the scraper blades. For angularly ad-- justing the scraper blades, the main frame of the implement is first tilted by operating one of the levers 15, or both levers may be operated in reverse directions, in order that the weight of the load may be imposed on the ground at either pair of ends of the blades. Thus should the implement frame be tilted to impose the weight at the right side thereof, the right hand ends of the scraper blades will drag heavily on the ground as the implement advances. This dragging action will tend to retard the movement of the right ends of the blades, and they will swing as indicated in dotted lines Figure l. The dragging or retarding action of the blades is imparted to the longitudinal scraper beam 32 at the right side of the implement, and through this beam and its two pivot bolts 33 to the right hand ends of the transverse bars 28, 29. The transmission of movement to these bars results in a swinging action of the bars on their pivot bolts 41, and the left hand ends of these bars are swung to the front as the right hand ends turn to the rear. The six pivot bolts of the flexible frame permit this movement and the rigid upper and lower members of the fixed scraper frame guide the flexible frame in its movement and hold the frame against vertical movement. The change in position of the two longitudinal supporting beams 32 also causes a change in the position of the equalizing chain 47 and it is caused to slide through the eyelet 4:6 with its longer end at the right. The strain of dragging the scraper blades over the ground is thus equalized and applied at the eyelet 46 or eyebolt on the draft bar 46 regardless of the position of the flexed scraper frame, and the scrapers are adapted to properly perform their functions at various adjustable angles with relation. to the longitudinal center line of the implement.

Having thus fully described my invention, What I claim as new and desire to secure by Letters Patent is:

1. The combination with a wheeled implement having a fixed scraper frame and means for tilting the implement to adjusted position, of a flexible scraper frame having a swivel support in the longitudinal center of the fixed frame and movable therein, and a pair of transversely disposed drag members supported from the flexible frame.

2. The combination with a wheeled implement having a vertically adjustable and laterally tiltable main frame and a fixed scraper frame, of a flexible frame having a swivel support in the longitudinal center of the main frame, a transverse drag member supported from the flexible frame, and an equalizing draft appliance connecting the flexible frame and main frame.

3. The combination in a wheeled implement including a laterally tiltable main frame and a fixed scraper frame, of a flexible frame having spaced swivel supports on the longitudinal center of the main frame, a pair of scraper blades supported from the flexible frame, and an equalizing draft appliance connecting the flexible frame and main frame whereby the scraper blades may be turned to angular position when the main frame is tilted.

4. The combination in an implement as described with a fixed, supporting, guide frame and main frame, of means for tilting the said frames, a flexible frame. having swivel support from the longitudinal center of the main frame and guided in the supporting frame, a drag member carried by the flexible frame, and an equalizing draft appliance connecting the main frame and the flexible frame.

5. The combination with a tiltable main frame and a fixed guide frame, of a pair of transverse bars having swivel supports in the longitudinal center of the main frame, a pair of longitudinal beams having pivotal supports from said bars, a drag member carried by said beams, and an equalizing draft appliance connecting the main frame and said beams.

6. The combination with a tiltable main frame and its fixed guide frame, of a pair of transverse bars having swivel supports in the longitudinal center of the main frame, a bearing plate at each end of said bars, a pair of longitudinal beams pivotally supported from said plates, a drag member carried by the beams, and an llt) equalizing draft appliance connecting said beams and main frame.

7. The combination with a tiltable main frame and guide frame, of a central longit-udinal plate fixed to the main frame, a pair of transverse bars swiveled to said plate and supported in the guide frame, a pair of longitudinal beams pivotally supported from said bars, a drag member carried by the beams, and an equalizing draft appliance connecting said beams and main frame.

8. The combination with a tiltable main, frame and guide frame, of a fixed central longitudinal plate and rigid connections between said plate and main frame, a pair of transverse bars movable in the guide frame and a swivel connection between each bar and said plate, a pair of longitudinal beams pivotally connected to said bars, a drag member carried by said beams, and an equalizing draft appliance connecting said beams and main frame.

9. The combination with a tiltable main frame and guide frame, of a fixed central longitudinal plate and rigid connections between said plate and main frame, a pair of transverse bars swiveled to said plate and supported in the guide frame, bearing plates at the ends of said bars Within the guide frame, a pair of longitudinal beams pivoted to said bearing plates, a drag member carried by said beams, and an equalizing draft appliance connecting said beams and main frame.

10. The combination with a main frame and its guide frame, of a flexible frame swiveled in the longitudinal center of the main frame and a drag member carried thereby, means for tilting the drag member, an equalizing chain connected with the main frame, and equalizing rods connecting the ends of said chain with said flexible frame.

In testimony whereof I affix my signature.

JAMES B. JARMIN. 

